Question 1

Skeletal muscles are capable of limited repair after injury.

Accepted Answer

A) True 
 B)False

Question 2

In twitch summation, the muscle fiber

Accepted Answer

A) is stimulated again before the fibers returns to resting potential. 
B) is stimulated again before it completely returns to resting position. 
C) contracts stronger but stronger action potentials do not occur. 
D) experiences a and b 
E) experiences b and c 
A) is stimulated again before the fibers returns to resting potential. 
B) is stimulated again before it completely returns to resting position. 
C) contracts stronger but stronger action potentials do not occur. 
D) experiences a and b 
E) experiences b and c

Question 3

Skeletal muscle fibers

Accepted Answer

A) are some of the longest cells in the body 
B) are attached end-to-end within a muscle 
C) contain Z lines within their A bands 
D) contain only one nucleus 
E) exhibit characteristics b and c 
A) are some of the longest cells in the body 
B) are attached end-to-end within a muscle 
C) contain Z lines within their A bands 
D) contain only one nucleus 
E) exhibit characteristics b and c

Question 4

Select the correct statement about the summation of simple twitches.

Accepted Answer

A) They can occur because of the long duration of the action potential in a muscle fiber. 
B) They reduce the tension in a muscle. 
C) They result from the slow stimulation of a muscle fiber. 
D) The effect is unrelated to the refractory periods of action potentials. 
E) The twitches resulting from separate action potentials. 
A) They can occur because of the long duration of the action potential in a muscle fiber. 
B) They reduce the tension in a muscle. 
C) They result from the slow stimulation of a muscle fiber. 
D) The effect is unrelated to the refractory periods of action potentials. 
E) The twitches resulting from separate action potentials.

Question 5

Troponin

Accepted Answer

A) binds with calcium to allow sarcomere shortening 
B) breaks down myosin cross bridges 
C) is an enzyme in the sarcomere 
D) forms the boundaries of a sarcomere 
E) has an ATPase site 
A) binds with calcium to allow sarcomere shortening 
B) breaks down myosin cross bridges 
C) is an enzyme in the sarcomere 
D) forms the boundaries of a sarcomere 
E) has an ATPase site

Question 6

Identify the characteristic(s) shared by all types of muscle tissues?

Accepted Answer

A) They are neurogenic. 
B) They have T tubules. 
C) They have tropomyosin. 
D) They attach to tendons. 
E) They have neuromuscular junctions. 
A) They are neurogenic. 
B) They have T tubules. 
C) They have tropomyosin. 
D) They attach to tendons. 
E) They have neuromuscular junctions.

Question 7

Which statement is incorrect about smooth muscle?

Accepted Answer

A) It develops less tension per unit cross-sectional area compared to skeletal muscle. 
B) It can maintain tension with comparatively less ATP consumption than skeletal muscle. 
C) It lacks troponin. 
D) The range of lengths over which it can develop near maximal tension is greater than for skeletal muscle. 
E) In the walls of a hollow organ it can accommodate variable volumes with little change in the pressure exerted on the organ's contents. 
A) It develops less tension per unit cross-sectional area compared to skeletal muscle. 
B) It can maintain tension with comparatively less ATP consumption than skeletal muscle. 
C) It lacks troponin. 
D) The range of lengths over which it can develop near maximal tension is greater than for skeletal muscle. 
E) In the walls of a hollow organ it can accommodate variable volumes with little change in the pressure exerted on the organ's contents.

Question 8

Indicate the characteristics of the muscle-tension receptors using the following answer code:
a.muscle spindle
b.Golgi tendon organ
c.both of these receptors
-Is activated by muscle stretch

Accepted Answer

The answer of Indicate the characteristics of the muscle-tension receptors...

Question 9

A motor unit is a single muscle plus all of the motor neurons that innervate it.

Accepted Answer

A) True 
 B)False

Question 10

Flaccid paralysis in a condition in which skeletal muscles receive an increase in inhibitory input from higher brain centers.

Accepted Answer

A) True 
 B)False

Question 11

Which two labeled parts serve as anchoring sites for the body's largest protein molecule? ____

Accepted Answer

The answer of Which two labeled parts serve as anchoring...

Question 12

Which one of the following statements about cardiac muscle is incorrect?

Accepted Answer

A) It contains gap junctions. 
B) It is found only in the heart 
C) It is self-excitable. 
D) It is striated with intercalated disks. 
E) It lacks tropomyosin. 
A) It contains gap junctions. 
B) It is found only in the heart 
C) It is self-excitable. 
D) It is striated with intercalated disks. 
E) It lacks tropomyosin.

Question 13

Multi-unit smooth muscle is

Accepted Answer

A) neurogenically activated 
B) under ANS control 
C) found in the iris of the eye 
D) all of the above 
E) none of the above 
A) neurogenically activated 
B) under ANS control 
C) found in the iris of the eye 
D) all of the above 
E) none of the above

Question 14

Creatine kinase donates one of its own phosphates to creatine to convert the creatine to creatine phosphate.

Accepted Answer

A) True 
 B)False

Question 15

Gradation of muscle contraction can be accomplished by stimulating variable portions of each muscle fiber.

Accepted Answer

A) True 
 B)False

Question 16

After the power stroke, ____________________ binds with the cross bridge, which causes the cross bridge to detach from the ____________________, which is part of the thin filament.

Accepted Answer

The answer of After the power stroke, ____________________ binds with...

Question 17

Slow-oxidative fibers are type ____________________ fibers; fast glycolytic fibers are type ____________________ fibers; and fast, oxidative fibers are type ____________________ fibers.

Accepted Answer

The answer of Slow-oxidative fibers are type ____________________ fibers; fast...

Question 18

Bones serve as fulcrums for muscle action.

Accepted Answer

A) True 
 B)False

Question 19

Whole muscle tension depends on all of the following except

Accepted Answer

A) number of muscle fibers contracting 
B) tension produced by each contracting fiber 
C) extent of motor-unit recruitment 
D) frequency of stimulation 
E) the proportion of each motor unit used at any given time 
A) number of muscle fibers contracting 
B) tension produced by each contracting fiber 
C) extent of motor-unit recruitment 
D) frequency of stimulation 
E) the proportion of each motor unit used at any given time

Question 20

The structure labeled ____ contains only three different proteins.

Accepted Answer

The answer of The structure labeled ____ contains only three...

Skeletal muscles are capable of limited repair after injury.

In twitch summation, the muscle fiber

Skeletal muscle fibers

Select the correct statement about the summation of simple twitches.

Troponin

Identify the characteristic(s) shared by all types of muscle tissues?

Which statement is incorrect about smooth muscle?

Indicate the characteristics of the muscle-tension receptors using the following answer code: a.muscle spindle b.Golgi tendon organ c.both of these receptors -Is activated by muscle stretch

A motor unit is a single muscle plus all of the motor neurons that innervate it.

Flaccid paralysis in a condition in which skeletal muscles receive an increase in inhibitory input from higher brain centers.

Which two labeled parts serve as anchoring sites for the body's largest protein molecule? ____

Which one of the following statements about cardiac muscle is incorrect?

Multi-unit smooth muscle is

Creatine kinase donates one of its own phosphates to creatine to convert the creatine to creatine phosphate.

Gradation of muscle contraction can be accomplished by stimulating variable portions of each muscle fiber.

After the power stroke, binds with the cross bridge, which causes the cross bridge to detach from the , which is part of the thin filament.

Slow-oxidative fibers are type fibers; fast glycolytic fibers are type fibers; and fast, oxidative fibers are type fibers.

Bones serve as fulcrums for muscle action.

Whole muscle tension depends on all of the following except

The structure labeled ____ contains only three different proteins.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

Exam 8: Muscle Physiology

Skeletal muscles are capable of limited repair after injury.

In twitch summation, the muscle fiber

Skeletal muscle fibers

Select the correct statement about the summation of simple twitches.

Troponin

Identify the characteristic(s) shared by all types of muscle tissues?

Which statement is incorrect about smooth muscle?

Indicate the characteristics of the muscle-tension receptors using the following answer code: a.muscle spindle b.Golgi tendon organ c.both of these receptors -Is activated by muscle stretch

A motor unit is a single muscle plus all of the motor neurons that innervate it.

Flaccid paralysis in a condition in which skeletal muscles receive an increase in inhibitory input from higher brain centers.

Which two labeled parts serve as anchoring sites for the body's largest protein molecule? ____

Which one of the following statements about cardiac muscle is incorrect?

Multi-unit smooth muscle is

Creatine kinase donates one of its own phosphates to creatine to convert the creatine to creatine phosphate.

Gradation of muscle contraction can be accomplished by stimulating variable portions of each muscle fiber.

After the power stroke, ____________________ binds with the cross bridge, which causes the cross bridge to detach from the ____________________, which is part of the thin filament.

Slow-oxidative fibers are type ____________________ fibers; fast glycolytic fibers are type ____________________ fibers; and fast, oxidative fibers are type ____________________ fibers.

Bones serve as fulcrums for muscle action.

Whole muscle tension depends on all of the following except

The structure labeled ____ contains only three different proteins.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

After the power stroke, binds with the cross bridge, which causes the cross bridge to detach from the , which is part of the thin filament.

Slow-oxidative fibers are type fibers; fast glycolytic fibers are type fibers; and fast, oxidative fibers are type fibers.